Texas Instruments TLC6C5716QDAPRQ1

There are automotive applications for indicators and for LCD local-dimming backlighting.For these applications, more persons think multi-channel constant-current LED drivers arenecessary. The requirement is to get the same intensity and color temperature of LEDs. Forsystem-level safety, it is necessary that the LED drivers can sense faults.

The TLC6C5716-Q1 device is an automotive 16-channel constant-current RGB LED driver thatcan do tests on the LEDs. The TLC6C5716-Q1 device supplies a maximum of 50-mA output current set byan external resistor. The device has a 7-bit dot correction with two ranges for each output. Thedevice also has an 8-bit intensity control for the outputs of each color group.

A 12-,10-, or 8-bit grayscale control adjusts the intensity of each output. The devicehas circuits that sense faults in the system, including LED faults, adjacent-pin short faults,reference-resistor faults, and more. A slew rate control has 2 positions for adjustment to get thelargest decrease in system noise. There is an interval between the changes of output level from oneLED group to a different one. This interval helps to decrease the starting electrical current. TheSDI and SDO pins let more than one device be connected in series for control through 1 serialinterface.